Did raise that a while? back, not sure it inspired much interest, but you would need to define whether one was dealing with general UX /UI or the default theme, from a theming point of view not child theme necessarily , but full on theming some UI / UX is merited along with other issues such as identifying markup that needs removing from core if applicable and aspects such as better handling of activity_action which isn’t fun to deal with from a frontend perspective.

If people want to play a role in the development of BuddyPress, the best way is to either put a patch up on trac, or attend a dev meeting and let us know you are interested. We can find you a task for your skills.

If someone wants to make a discussion group on this site, that’s cool too. But any enhancements or ideas need to be fed back into the trac, so we can keep track of them